please help

hi all need some help from some people that have loads of grows and no what my problem is.

rundown. led grow 480watts.
medium-soil
strain- vip northern from vip seeds. feminized
24 hours lights on due to winter where i am freezing temps.
water ph-6.5-6.7
topped one pinched twice.
5 week of veg.
rh 45-60
medium also has dolomite lime in
co2 bag aswell
useing tap water
all so have cal mag
molasses
jungle juice bloom
baby bio veg nuts
espom salt
started to notice that my older fan leafs are yellowing at end of the leaf tips drying up and comeing off.
i transplanted her around week 2 in to 15 litre pot
all so getting yellowing on some of the vains of the new grow also light patches of lime green on some of the leaves.il post some pics up.

im not sure but im thinking its a potassium def. need to check run off next watering.
with me thinking that its potassium def due to low ph i gave her 3 litres of 6.7 water and mollases hopeing it would help. the problem seems to have slowed alittle.that was 3 days ago.

havent used any fert yet. any help would be great il post the pics ups. hope you guys can help cheers.

I

Looks like she may be hungrey.

You think I should give her some food. She hasn't been in the pot that long. Any help would be great

Have you feed her at all yet

What specific soil are u using? How much Epson did u add? And go get the soil nutrient test from any wal mart it comes with 4 vials each with a different colored Lil pill in it for testing for different macros and micros and to see how much u actively have in them! I also think your soil may have needed some inoculation maybe some amino acids! But check the ferts with the test it is like 5 bucks then post what soil your using and your amounts of shit and I'll do my best to help ya!

No nothing yet only nuts in the soil

soil is called gro sure. havent used espom salt i just have it in case also cal mg and molasses also have sea weed extract as well